From: Abhinav Kumar <quic_abhin...@quicinc.com>

Currently the dp_display bridge helpers, in particular the
dp_display_enable()/dp_display_disable() use the cached panel.
To be able to re-use these helpers for MST use-case abstract the
helpers to use the panel which is passed in to them.

Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
Signed-off-by: Yongxing Mou <quic_yong...@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 95 ++++++++++++++++++++++++++-----------
 drivers/gpu/drm/msm/dp/dp_display.h |  8 ++++
 2 files changed, 75 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c 
b/drivers/gpu/drm/msm/dp/dp_display.c
index 
754e6e1fedf2c116911e85e4cdac1110e88b2056..68c74f30255d96f13ead817b69f481f41d53eec6
 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -866,7 +866,8 @@ static int msm_dp_display_prepare(struct 
msm_dp_display_private *dp)
        return rc;
 }
 
-static int msm_dp_display_enable(struct msm_dp_display_private *dp)
+static int msm_dp_display_enable(struct msm_dp_display_private *dp,
+                                struct msm_dp_panel *msm_dp_panel)
 {
        int rc = 0;
        struct msm_dp *msm_dp_display = &dp->msm_dp_display;
@@ -877,7 +878,7 @@ static int msm_dp_display_enable(struct 
msm_dp_display_private *dp)
                return 0;
        }
 
-       rc = msm_dp_ctrl_on_stream(dp->ctrl, dp->panel, dp->max_stream);
+       rc = msm_dp_ctrl_on_stream(dp->ctrl, msm_dp_panel, dp->max_stream);
        if (!rc)
                msm_dp_display->power_on = true;
 
@@ -923,14 +924,15 @@ static void msm_dp_display_audio_notify_disable(struct 
msm_dp_display_private *d
        msm_dp_display->audio_enabled = false;
 }
 
-static int msm_dp_display_disable(struct msm_dp_display_private *dp)
+static int msm_dp_display_disable(struct msm_dp_display_private *dp,
+                                 struct msm_dp_panel *msm_dp_panel)
 {
        struct msm_dp *msm_dp_display = &dp->msm_dp_display;
 
        if (!msm_dp_display->power_on)
                return 0;
 
-       msm_dp_ctrl_clear_vsc_sdp_pkt(dp->ctrl, dp->panel);
+       msm_dp_ctrl_clear_vsc_sdp_pkt(dp->ctrl, msm_dp_panel);
 
        /* dongle is still connected but sinks are disconnected */
        if (dp->link->sink_count == 0) {
@@ -1597,7 +1599,7 @@ void msm_dp_display_atomic_prepare(struct msm_dp *dp)
        mutex_unlock(&msm_dp_display->event_mutex);
 }
 
-void msm_dp_display_atomic_enable(struct msm_dp *dp)
+void msm_dp_display_enable_helper(struct msm_dp *dp, struct msm_dp_panel 
*msm_dp_panel)
 {
        int rc = 0;
 
@@ -1607,16 +1609,14 @@ void msm_dp_display_atomic_enable(struct msm_dp *dp)
 
        mutex_lock(&msm_dp_display->event_mutex);
 
-       msm_dp_display_set_stream_info(dp, msm_dp_display->panel, 0, 0, 0, 0, 
0);
-
        if (dp->prepared) {
-               rc = msm_dp_display_enable(msm_dp_display);
+               rc = msm_dp_display_enable(msm_dp_display, msm_dp_panel);
                if (rc)
                        DRM_ERROR("DP display enable failed, rc=%d\n", rc);
                rc = msm_dp_display_post_enable(dp);
                if (rc) {
                        DRM_ERROR("DP display post enable failed, rc=%d\n", rc);
-                       msm_dp_display_disable(msm_dp_display);
+                       msm_dp_display_disable(msm_dp_display, msm_dp_panel);
                }
        }
 
@@ -1627,14 +1627,25 @@ void msm_dp_display_atomic_enable(struct msm_dp *dp)
        mutex_unlock(&msm_dp_display->event_mutex);
 }
 
-void msm_dp_display_atomic_disable(struct msm_dp *dp)
+void msm_dp_display_atomic_enable(struct msm_dp *msm_dp)
+{
+       struct msm_dp_display_private *msm_dp_display;
+
+       msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, 
msm_dp_display);
+
+       msm_dp_display_set_stream_info(msm_dp, msm_dp_display->panel, 0, 0, 0, 
0, 0);
+
+       msm_dp_display_enable_helper(msm_dp, msm_dp_display->panel);
+}
+
+void msm_dp_display_disable_helper(struct msm_dp *dp, struct msm_dp_panel 
*msm_dp_panel)
 {
        struct msm_dp_display_private *msm_dp_display;
 
        msm_dp_display = container_of(dp, struct msm_dp_display_private, 
msm_dp_display);
 
        if (msm_dp_display->mst_supported)
-               msm_dp_ctrl_push_vcpf(msm_dp_display->ctrl, 
msm_dp_display->panel);
+               msm_dp_ctrl_push_vcpf(msm_dp_display->ctrl, msm_dp_panel);
        else
                msm_dp_ctrl_push_idle(msm_dp_display->ctrl);
 
@@ -1645,21 +1656,30 @@ void msm_dp_display_atomic_disable(struct msm_dp *dp)
        }
 }
 
-static void msm_dp_display_unprepare(struct msm_dp_display_private *dp)
+void msm_dp_display_atomic_disable(struct msm_dp *msm_dp)
 {
-       struct msm_dp *msm_dp_display = &dp->msm_dp_display;
+       struct msm_dp_display_private *msm_dp_display;
 
-       if (!msm_dp_display->prepared) {
-               drm_dbg_dp(dp->drm_dev, "Link already setup, return\n");
+       msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, 
msm_dp_display);
+
+       msm_dp_display_disable_helper(msm_dp, msm_dp_display->panel);
+}
+
+static void msm_dp_display_unprepare(struct msm_dp_display_private 
*msm_dp_display_priv)
+{
+       struct msm_dp *msm_dp = &msm_dp_display_priv->msm_dp_display;
+
+       if (!msm_dp->prepared) {
+               drm_dbg_dp(msm_dp->drm_dev, "Link already setup, return\n");
                return;
        }
 
-       pm_runtime_put_sync(&msm_dp_display->pdev->dev);
+       pm_runtime_put_sync(&msm_dp->pdev->dev);
 
-       msm_dp_display->prepared = false;
+       msm_dp->prepared = false;
 }
 
-void msm_dp_display_atomic_post_disable(struct msm_dp *dp)
+void msm_dp_display_atomic_post_disable_helper(struct msm_dp *dp, struct 
msm_dp_panel *msm_dp_panel)
 {
        u32 hpd_state;
        struct msm_dp_display_private *msm_dp_display;
@@ -1678,7 +1698,7 @@ void msm_dp_display_atomic_post_disable(struct msm_dp *dp)
 
        msm_dp_display_audio_notify_disable(msm_dp_display);
 
-       msm_dp_display_disable(msm_dp_display);
+       msm_dp_display_disable(msm_dp_display, msm_dp_panel);
 
        hpd_state =  msm_dp_display->hpd_state;
        if (hpd_state == ST_DISCONNECT_PENDING) {
@@ -1686,24 +1706,32 @@ void msm_dp_display_atomic_post_disable(struct msm_dp 
*dp)
                msm_dp_display->hpd_state = ST_DISCONNECTED;
        }
 
-       msm_dp_display_unprepare(msm_dp_display);
-
        drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
 
        mutex_unlock(&msm_dp_display->event_mutex);
 }
 
-void msm_dp_display_mode_set(struct msm_dp *dp,
-                            const struct drm_display_mode *mode,
-                            const struct drm_display_mode *adjusted_mode)
+void msm_dp_display_atomic_post_disable(struct msm_dp *msm_dp)
 {
        struct msm_dp_display_private *msm_dp_display;
-       struct msm_dp_panel *msm_dp_panel;
 
-       msm_dp_display = container_of(dp, struct msm_dp_display_private, 
msm_dp_display);
-       msm_dp_panel = msm_dp_display->panel;
+       msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, 
msm_dp_display);
+
+       msm_dp_display_atomic_post_disable_helper(msm_dp, 
msm_dp_display->panel);
+
+       msm_dp_display_unprepare(msm_dp_display);
+}
+
+void msm_dp_display_mode_set_helper(struct msm_dp *msm_dp,
+                                   const struct drm_display_mode *mode,
+                                   const struct drm_display_mode 
*adjusted_mode,
+                                   struct msm_dp_panel *msm_dp_panel)
+{
+       struct msm_dp_display_private *msm_dp_display;
 
-       msm_dp_display_set_mode(dp, adjusted_mode, msm_dp_panel);
+       msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, 
msm_dp_display);
+
+       msm_dp_display_set_mode(msm_dp, adjusted_mode, msm_dp_panel);
 
        /* populate wide_bus_support to different layers */
        msm_dp_display->ctrl->wide_bus_en = 
msm_dp_panel->msm_dp_mode.out_fmt_is_yuv_420 ?
@@ -1712,6 +1740,17 @@ void msm_dp_display_mode_set(struct msm_dp *dp,
                false : msm_dp_display->wide_bus_supported;
 }
 
+void msm_dp_display_mode_set(struct msm_dp *msm_dp,
+                            const struct drm_display_mode *mode,
+                            const struct drm_display_mode *adjusted_mode)
+{
+       struct msm_dp_display_private *msm_dp_display;
+
+       msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, 
msm_dp_display);
+
+       msm_dp_display_mode_set_helper(msm_dp, mode, adjusted_mode, 
msm_dp_display->panel);
+}
+
 void msm_dp_bridge_hpd_enable(struct drm_bridge *bridge)
 {
        struct msm_dp_bridge *msm_dp_bridge = to_dp_bridge(bridge);
diff --git a/drivers/gpu/drm/msm/dp/dp_display.h 
b/drivers/gpu/drm/msm/dp/dp_display.h
index 
10a5be9337cf9b2ea90b3061ef8d0d6de3282431..96fec50601400ca44d1cdd310f2353e301874099
 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.h
+++ b/drivers/gpu/drm/msm/dp/dp_display.h
@@ -49,5 +49,13 @@ enum drm_mode_status msm_dp_display_mode_valid(struct msm_dp 
*dp,
 int msm_dp_display_set_stream_info(struct msm_dp *dp, struct msm_dp_panel 
*panel,
                                   enum msm_dp_stream_id stream_id,
                                   u32 start_slot, u32 num_slots, u32 pbn, int 
vcpi);
+void msm_dp_display_enable_helper(struct msm_dp *msm_dp, struct msm_dp_panel 
*msm_dp_panel);
+void msm_dp_display_disable_helper(struct msm_dp *msm_dp, struct msm_dp_panel 
*msm_dp_panel);
+void msm_dp_display_mode_set_helper(struct msm_dp *msm_dp,
+                                   const struct drm_display_mode *mode,
+                                   const struct drm_display_mode 
*adjusted_mode,
+                                   struct msm_dp_panel *msm_dp_panel);
+void msm_dp_display_atomic_post_disable_helper(struct msm_dp *msm_dp,
+                                              struct msm_dp_panel 
*msm_dp_panel);
 
 #endif /* _DP_DISPLAY_H_ */

-- 
2.34.1

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